Answer:
B)Prophase,Metaphase,Anaphase,Telephase
Explanation:
Prophase:At this stage,the chromatin threads condense to form distinct chromosomes, long and thin at first,later become shorter and fatter. Nucleolus disappears, nuclear membrane disintegrates, series of spindle (protein) fibres are formed spanning the cell from end to end.
Metaphase:Here, Chromosomes migrate to the central plain of the cells and arrange themselves round the equator of the spindle, attached by centromeres to be 'spindle fibres' microtubule.
Chromatids of each chromosome move slightly apart at the centromere regions,the sister chromatids being oriented towards opposite poles
Anaphase: Chromatids belonging to each chromosome part company and move towards opposite poles of the spindle, probably by a pull from the spindle fibres attached to the centromere which shortens.
Telephase: Chromatids reach the polar ends of the spindle and become densely packed together. Cell divide into two. Spindle fibres break down, centrioles replicate. Nuclear membrane is re-formed. Nucleolus reappears. Chromosomes gradually uncoil and return to their original thread-like form i.e, Chromatin threads.
Yes Bacteria are considered to be prokaryotes,it means they dont have a nucleus or other membranes but instead the DNA is in the neceloid,a region with no membrane or a plasmid a small circle of extra genetic info floating right in the cytoplasm the thing that fills the cell. so yes they do have DNA they dont need a necleus the just need the neceloid
Answer:
Find the measure of x and y (3x-3) (4y+4) 60 degrees
Explanation:
Answer: Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
Explanation: